BEGIN:VCALENDAR PRODID:-//eluceo/ical//2.0/EN VERSION:2.0 CALSCALE:GREGORIAN BEGIN:VEVENT UID:www.tcs.tifr.res.in/event/1303 DTSTAMP:20230914T125958Z SUMMARY:Differentiable Algorithms for Representation\, Processing and Rende ring of Shapes DESCRIPTION:Speaker: Aalok Gangopadhyay (IIT Gandhinagar)\n\nAbstract: \nOn e of the primary objectives of visual computing has been the development o f representations and algorithms that enable computer systems to acquire\, process\, and render shapes efficiently. While numerous representations a nd algorithms have been proposed\, many involve non-differentiable compone nts\, making them incompatible with gradient-based optimization methods. T he first part of this talk centers around developing differentiable repres entations and rendering techniques for shapes. We present our work on desi gning differentiable parameterized families of homeomorphisms and diffeomo rphisms\, possibly with additional symmetry constraints\, which are used t o deform a template shape having desired topological properties. This enab les us to address shape search problems using gradient-based optimization methods. We showcase our results for various applications\, including sear ching for curve embeddings whose perspective projections resemble a target image\, untangling knots\, parametrization of prototiles belonging to spe cific isohedral tiling classes\, and density estimation on identification spaces. In the subsequent part of this talk\, we focus on learning-based f rameworks\, which generate differentiable algorithms for shape-processing problems. Specifically\, we will elaborate on our work on surface denoisin g\, surface correspondence\, temporal surface blending\, and curve extract ion problems. The talk concludes with a discussion on future directions an d potential areas of exploration for advancing the field.\n URL:https://www.tcs.tifr.res.in/web/events/1303 DTSTART;TZID=Asia/Kolkata:20230612T160000 DTEND;TZID=Asia/Kolkata:20230612T170000 LOCATION:A201 END:VEVENT END:VCALENDAR